Summary The pilots flew a Piper PA31-350 aircraft (registration C-FTNS, serial number31-7652009) from Qubec, Quebec, to Saint John, New Brunswick, on an instrument flight rules flight, with Fredericton, New Brunswick, as their alternate airport. On arrival, they flew a radar-vectored, instrument landing system approach in low-visibility conditions to Runway23 at the Saint John Airport. Radio contact was lost while the aircraft was on the approach and a brief emergency locator transmitter signal was heard at 2234:30 Atlantic daylight time. The aircraft had crashed on final approach, and the two pilots sustained serious burn injuries in the ensuing post-crash fire. Ce rapport est galement disponible en franais. Other Factual Information History of the Flight The en route portion of the flight from Qubec was uneventful. Approach clearance was given by Moncton Centre for the instrument landing system (ILS) Runway23 approach to the Saint John Airport (CYSJ). Radar showed that C-FTNS was established on the localizer with a stable flight profile, at least until 1500feet above ground level (agl) when radar coverage was lost due to terrain interference. The pilot-in-command was the pilot not flying (PNF) and was in the right-hand seat. The other pilot was the pilot flying (PF). A regional airline Beech 1900 flight crew had attempted an approach on the same runway just before the approach by the occurrence aircraft. The crew members of the Beech1900 were flying a pilot-monitored approach1 with the first officer flying. When adequate visual reference with the runway environment was acquired, the captain took control from the first officer and continued the approach down to 100feetagl. The first officer continued to monitor the instruments and the approach, observed that the aircraft was misaligned with the runway, and called for a missed approach. Shortly after the Beech 1900 started the missed approach, the PNF of C-FTNS established contact with the CYSJ Flight Service Station (FSS) specialist. The specialist observed on radar that the Beech 1900 was conducting the missed approach, told C-FTNS to stand by and instructed the crew of the Beech 1900 to contact Moncton Centre. Before instructing the crew to contact Moncton, the FSS specialist did not ask the Beech1900 crew to provide a pilot report (PIREP) on the weather they encountered during their approach and attempted landing, nor did the pilots offer to provide a PIREP. Paragraph234.1 of the NAV CANADA Flight Service Station Manual of Operations (FSS MANOPS) states in part: The FSS specialist did not advise C-FTNS of the Beech1900's missed approach, nor was there a requirement to do so, and the pilots of C-FTNS were unaware that the Beech1900 had not successfully completed the approach. The FSS specialist advised C-FTNS that the reported 2200 Atlantic daylight time2 weather at CYSJ was as follows: wind 220magnetic(M) at 13knots gusting to 18knots, visibility statute mile (sm) in fog, vertical visibility 200feet, runway visual range (RVR) 2000feet with the runway lights on strength five. Moderate turbulence was encountered by the accident aircraft during the latter stages of the approach to Runway23. During this encounter, the aircraft went above the glideslope and drifted left of the localizer. The PF,manually flying the approach, corrected for the deviations and continued the approach. A short time later, the PNF called the approach lights coming into view and shortly thereafter called minimums (decision height [DH]). The PFdiscontinued his instrument scan, observed the runway lights at the two o'clock position in the windscreen, and attempted to correct. The PNF called for an overshoot, but the aircraft continued to descend until it struck the terrain. Because of the absence of radar and flight recorder data, the exact path and correlation of the crew's observations during the approach could not be established. The last radio transmission from the aircraft was when it was established on the final approach to Runway23. After the impact, a two-second emergency locator transmitter (ELT) signal was heard by the FSS specialist at 2234:30. Twenty minutes later, an airport fire response vehicle located the aircraft inverted and on fire at the southeast edge of the Clover Valley Road, about one-half nautical mile from the threshold of Runway23 and 650feet to the southeast of the extended runway centreline (Figure1). The pilots had already escaped through the cabin entrance door and made their way to a private dwelling to seek assistance; both crew members had sustained serious burn injuries. The weather recorded six minutes after the accident was as follows: wind 210M at 13knots with gusts to 20knots; visibility sm in fog; temperature 17C; dew point 17C; and altimeter setting29.97. Approximately one minute after the crash, the RVR was 1800feet, and it stabilized at 1600feet about six minutes after the accident. Aircraft Wreckage and Site Examination The aircraft struck some alder tree-tops, left tire marks on the paved surface of the Clover Valley Road and then entered an area of alder trees and marshy terrain. From the tree and ground marks, it was determined that the aircraft track was about 182M when it struck the ground, while the extended centreline of the runway was on a track of 230, a difference of about 50. It was also determined that the aircraft was approximately 10nose down and in a three-degree right bank when it struck the tree-tops and crossed the road. The right main wheel contacted the paved road surface, leaving a heavy tire mark. The impact was almost abeam of the DH position. The initial contact contributed to a subsequent left rolling moment and a left-banked attitude of approximately 11as the aircraft entered the alder trees beyond the road. The aircraft continued forward, eventually rolling over and coming to rest inverted 650feet southeast of the localizer. The wreckage trail was approximately 110feet long. The cockpit and cabin were not initially compromised. A fuel-fed fire broke out a few seconds after the aircraft came to rest (Photo1). The fire was well developed by the time the two pilots exited through the aft cabin door. The fire consumed about 90percent of the fuselage. Both wings sustained severe fire damage, but the empennage remained relatively undamaged. Both engines were still enclosed in their cowlings and were in good condition except for some impact damage. Both propellers were still attached to the engines, and all the blades were bent rearward about mid-span, suggesting low propeller rpm during impact. Because of the softness of the marshy terrain, it was difficult to determine accurate rpm figures. Despite the severity of the burn damage to the airframe, continuity of all flight controls and engine controls was confirmed. No pre-impact airframe or engine anomalies were discovered during the wreckage examination. The Operator The aircraft had been acquired by the company three months before the accident. It was certified for single-pilot visual flight rules (VFR) and instrument flight rules (IFR) flight. It was privately registered and used for company business travel. Since the aircraft was not being operated commercially, there were no regulatory requirements for the pilots to pass an aircraft proficiency check ride, to have available and use multi-crew standard operating procedures (SOPs), or to complete a formal company training program to operate as a crew. Consequently, the aircraft was flown using only the checklists in the manufacturer's aircraft flight manual. Pilot Information The two pilots were licensed in accordance with the Canadian Aviation Regulations (CARs). The pilots' flight duty days were within the prescribed regulations and both were considered rested. The pilot-in-command was a part-time employee of the company and held a valid commercial licence. He had about 4800total flying hours, with approximately 550hours on multi-engine aircraft, including 20hours on the PA31-350. The most recent Group1 (multi-engine aircraft) instrument rating renewal was completed on 16October2003. His total instrument time was reported to be 425hours with only a few approaches conducted in visibility less than sm or 2600RVR. The pilot-in-command was retained by the company to help crew the aircraft if particularly long flights or challenging weather conditions were anticipated. The co-pilot, a full-time employee of the company, held a valid commercial licence with a valid medical. He had about 1400total flying hours, with approximately 500hours on multi-engine aircraft, including approximately 170hours on the PA31-350. An initial Group 1 instrument rating flight test had been completed on 31January2004, and since then, the co-pilot had only experienced a few approaches in visibility less than sm or 2600RVR. He was the company's full-time pilot and normally flew the aircraft as a single pilot under both VFR and IFRconditions. Aircraft Records indicate that the aircraft was certified, equipped, and maintained in accordance with existing regulations and approved procedures. This aircraft had an executive seat configuration for seven people. In the commuter configuration, the same aircraft can carry ten people. There was no indication of any failure or malfunction during the flight. The aircraft was equipped for single-pilot IFR flight and had a serviceable automatic flight control system (AFCS). The AFCS can be operated as a flight director to provide command information to the pilot when hand-flying the aircraft, or it can be coupled to the autopilot for automated flight. All the navigational instruments were located on the left-hand pilot's instrument panel to facilitate single-pilot operation. The PF was not confident using the flight director and did not use it during the ILS approach to Runway 23. Saint John Airport - Runway 23 Runway 23 is 7000feet long and 200feet wide, with a high-intensity approach light system 2400 feet long. The first 1000feet are sequenced white flashing lights and the remaining 1400feet are steady, white, runway alignment indicator lights. There are also green threshold lights and variable high-intensity runway edge lights. Runway 23 was served by a CategoryI ILSapproach. The DH was 200feet agl with an advisory visibility of mile or 2600RVR. The ILS provided a standard three-degree glideslope on a final approach course of 230M. A navigational status report taken at the time of the occurrence indicated that the ILS readings for Runway23 were normal. The last flight check of the ILS was conducted on 14May2004, and the results were within normal parameters. Approach Considerations A stabilized approach is a prerequisite to a successful landing. An approach is stable when an aircraft has a constant rate of descent along the approach path, the appropriate airspeed and power setting are stable, and the aircraft is configured appropriately for the approach. Aircraft on ILS approaches are considered stabilized3 on the approach path when they are flown within "one dot" (half the scale) of the full glidepath or localizer indicator displacement. The track bar indicator will reach full-scale deflection at 2degrees from the centre of the localizer beam. The glideslope indicator will reach full-scale deflection at 0.7degree from the centre of the glideslope beam. The ILS on Runway23 at CYSJ DH position was approximately 2900feet from the threshold (Figure1) and 200feet above ground. At this position, the width of the localizer beam is about 475feet horizontally, while the depth of the glideslope beam is about 45feet vertically. An aircraft would have to be outside of these parameters to produce full-scale deflection of the indicators. The Transport Canada Instrument Procedures Manual (IPM) (TP2076E, January2000) provides comprehensive guidance to pilots about the aspects of instrument flying. The following is some of the information related to flying an ILS: If the aircraft is inbound on the localizer above the glide path, the pilot must use extreme caution, because he or she must follow a non-standard procedure and might require an excessive rate of descent to regain the glide path. If at any time on final approach prior to DH, full-scale deflection of the localizer occurs, initiate a missed approach. When full-scale down deflection occurs on the GSI, descent to a non-precision minimum descent altitude may be continued without using excessive rates of descent. If full-scale up deflection occurs on the GSI, the aircraft should overshoot since obstacle clearance is not assured. Runways serviced with an RVR are subject to an approach ban (Section602.129 of the CARs). This section provides the only visibility-based restriction for the conduct of an approach or landing. This allows a pilot to conduct an approach to a runway anytime the reported RVR is at least 1200feet. If there is RVR equipment for the runway, but it is not serviceable or the RVR is not provided for other reasons, a pilot is not restricted from flying an approach. Visibility values provided in the Canada Air Pilot (CAP) approach plates are advisory only and, if prevailing at the time of approach, should result in the required visual reference being established and maintained to landing. The advisory visibility for the ILS approach for the Runway23 ILS procedure at CYSJ was sm or 2600RVR. A pilot may continue with a landing provided visual contact with the runway environment was made before passing the minimum descent altitude (MDA) or, for a precision approach, DH (see CAPGEN13). the runway or runway markings; the runway threshold or threshold markings; the touchdown zone or touchdown zone markings; the approach lights; the approach slope indicator system; the runway identification lights; the threshold and runway end lights; the touchdown zone light the parallel runway edge lights; or the runway centreline lights.